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Process Equipment and Plant Design

Process Equipment and Plant Design
Rotary driers are most economically designed for the number of heat transfer units (HTU) from

0.01 to 1
1.5 to 2.5
10 to 20
5 to 10

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Process Equipment and Plant Design
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Equal to
Half
1.5 times
Three fourth

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Process Equipment and Plant Design
Hole diameter of the seive trays in the distillation column ranges from __________ mm.

L to 3
4 to 8
3 to 12.5
12.5 to 18.5

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Process Equipment and Plant Design
The average velocity in the tubes of a 1-4 heat exchanger is __________ times that in 1-1 heat exchanger having the same size & number of tubes and operated at same liquid flow rate.

43834
43832
2
4

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Process Equipment and Plant Design
Tube height in a calendria type evaporator is normally less than __________ metres.

2
3.5
1
5.5

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Process Equipment and Plant Design
The length of straight rectangular weir used on cross-flow trays is generally __________ the column diameter.

2 ft irrespective of (for column > 3 ft diameter)
0.6-0.8 times
Equal to
Twice

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